212773651 has 2 divisors, whose sum is σ = 212773652. Its totient is φ = 212773650.

The previous prime is 212773607. The next prime is 212773657. The reversal of 212773651 is 156377212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212773651 - 2⁷ = 212773523 is a prime.

It is not a weakly prime, because it can be changed into another prime (212773657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106386825 + 106386826.

It is an arithmetic number, because the mean of its divisors is an integer number (106386826).

Almost surely, 2^212773651 is an apocalyptic number.

212773651 is a deficient number, since it is larger than the sum of its proper divisors (1).

212773651 is an equidigital number, since it uses as much as digits as its factorization.

212773651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 34.

The square root of 212773651 is about 14586.7628691221. The cubic root of 212773651 is about 596.9976412773.

The spelling of 212773651 in words is "two hundred twelve million, seven hundred seventy-three thousand, six hundred fifty-one".